X = input()
X = int(X)

if X >= 400 and X <= 599:
    print('8')
elif X >= 600 and X <= 799:
    print('7')
elif X >= 800 and X <= 999:
    print('6')
elif X >= 1000 and X <= 1199:
    print('5')
elif X >= 1200 and X <= 1399:
    print('4')
elif X >= 1400 and X <= 1599:
    print('3')
elif X >= 1600 and X <= 1799:
    print('2')
elif X >= 1800 and X <= 1999:
    print('1') X = input() X input() input X = int(X) X int(X) int X if X >= 400 and X <= 599:
    print('8')
elif X >= 600 and X <= 799:
    print('7')
elif X >= 800 and X <= 999:
    print('6')
elif X >= 1000 and X <= 1199:
    print('5')
elif X >= 1200 and X <= 1399:
    print('4')
elif X >= 1400 and X <= 1599:
    print('3')
elif X >= 1600 and X <= 1799:
    print('2')
elif X >= 1800 and X <= 1999:
    print('1') X >= 400 and X <= 599 X >= 400 X 400 X <= 599 X 599 print('8') print '8' elif X >= 600 and X <= 799:
    print('7') X >= 600 and X <= 799 X >= 600 X 600 X <= 799 X 799 print('7') print '7' elif X >= 800 and X <= 999:
    print('6') X >= 800 and X <= 999 X >= 800 X 800 X <= 999 X 999 print('6') print '6' elif X >= 1000 and X <= 1199:
    print('5') X >= 1000 and X <= 1199 X >= 1000 X 1000 X <= 1199 X 1199 print('5') print '5' elif X >= 1200 and X <= 1399:
    print('4') X >= 1200 and X <= 1399 X >= 1200 X 1200 X <= 1399 X 1399 print('4') print '4' elif X >= 1400 and X <= 1599:
    print('3') X >= 1400 and X <= 1599 X >= 1400 X 1400 X <= 1599 X 1599 print('3') print '3' elif X >= 1600 and X <= 1799:
    print('2') X >= 1600 and X <= 1799 X >= 1600 X 1600 X <= 1799 X 1799 print('2') print '2' elif X >= 1800 and X <= 1999:
    print('1') X >= 1800 and X <= 1999 X >= 1800 X 1800 X <= 1999 X 1999 print('1') print '1' X = input() input() X X = int(X) int(X) X
X = input()
X = int(X)

if X >= 400 and X <= 599:
    print('8')
elif X >= 600 and X <= 799:
    print('7')
elif X >= 800 and X <= 999:
    print('6')
elif X >= 1000 and X <= 1199:
    print('5')
elif X >= 1200 and X <= 1399:
    print('4')
elif X >= 1400 and X <= 1599:
    print('3')
elif X >= 1600 and X <= 1799:
    print('2')
elif X >= 1800 and X <= 1999:
    print('1')